Re: Octoram GS

[Dave Tribby <tribby@cup.hp.com>]

Sheane and Bonnie Meikle wrote:

> Anybody know the pin setting for this 8 meg memory card?


The OctoRAM takes either 256K or 1Meg SIMMS.  You can
load 1, 2, 4, or 8 SIMMs onto the card.

These are the valid jumper settings for each of the SIMM
sizes:

        256K SIMMs:     1       2       4       8
        Switch 1      xxx     xxx     xxx       xxx
               2      xxx     xxx     xxx     xxx
               3      xxx     xxx     xxx     xxx
               4      xxx       xxx     xxx     xxx
               5      xxx     xxx       xxx     xxx

 
       1M SIMMs:       1       2       4       8
        Switch 1      xxx     xxx     xxx       xxx
               2        xxx     xxx     xxx     xxx
               3        xxx     xxx     xxx     xxx
               4      xxx       xxx     xxx     xxx
               5      xxx     xxx       xxx     xxx


Here's another way of viewing the same information.  Each
of the 5 switches can be jumpered in either the left or
right position. Here are all the possible left/right
combinations, with the valid ones flagged:

        lllll llllr lllrl lllrr llrll llrlr llrrl llrrr
        256x1       256x2 256x4
        ~~~~~       ~~~~~ ~~~~~
        256K        512K  1Meg


        lrlll lrllr lrlrl lrlrr lrrll lrrlr lrrrl lrrrr
                                1Mx1        1Mx2  1Mx4
                                ~~~~        ~~~~  ~~~~
                                1Meg        2Meg  4Meg


        rllll rlllr rllrl rllrr rlrll rlrlr rlrrl rlrrr
                          256x8
                          ~~~~~
                          2Meg


        rrlll rrllr rrlrl rrlrr rrrll rrrlr rrrrl rrrrr
                                                  1Mx8
                                                  8Meg

Hope that this is what you need.

-- Dave Tribby
   http://www.educate.net.au/~apple2/software/tribby/
   http://member.aol.com/aapa96/davet.html